They bloom in fall and winter -- that is the great thing about them! And you have picked two nice varieties. Here is a link to some planting tips. (See below.) The main thing I have found is to plant them high in a wide but shallow hole, so they will not later sink below grade. And use plenty of good planting mix (it is worth it). Give them plenty of water during dry spells for the first couple of years until they get established.

Here is a link that might be useful: Camellia Planting Tips